What is expand (pi,3,-1)*(2pi,-3,7) ?

The solution to expand (pi,3,-1)*(2pi,-3,7) is pi,3,2pi,-pi,3,3,7-1*2pi,1*3,7

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expand (pi,3,-1)*(2pi,-3,7)

expand

(π, 3, - 1) \cdot (2 π, - 3, 7)

π, 3, 2 π, - π, 3, 3, 7 - 1 \cdot 2 π, 1 \cdot 3, 7

Solution steps

(π, 3, - 1) (2 π, - 3, 7)

= (3 π,, - 1) (2 π, - 3 \cdot 7,)

Apply FOIL method:

(a + b) (c + d) = a c + a d + b c + b d

a = π, 3,, b = - 1, c = 2 π,, d = - 3, 7

= π, 3, 2 π, π, 3, (- 3, 7) + (- 1) \cdot 2 π, (- 1) (- 3, 7)

Apply minus-plus rules

+ (- a) = - a, (- a) (- b) = ab

= π, 3, 2 π, - π, 3, 3, 7 - 1 \cdot 2 π, 1 \cdot 3, 7

(3, 0, 5) x (1, 4, - 2)

(9 x - 2 x^{2} - 8 x^{3})^{6}

\frac{x - 3}{2 ( x + 1 )}

\frac{( m + 145 ) ^{2}}{40}

2 x (3 - 2 x) + 4 (x - 1)^{'}

What is expand (pi,3,-1)*(2pi,-3,7) ?
The solution to expand (pi,3,-1)*(2pi,-3,7) is pi,3,2pi,-pi,3,3,7-1*2pi,1*3,7